AWS-Certified-Developer-Associate Exam
A Review Of Actual AWS-Certified-Developer-Associate pdf
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Q21. A user has attached an EBS volume to a running Linux instance as a "/dev/sdf" device. The user is unable to see the attached device when he runs the command "df -h". What is the possible reason for this?
A. The volume is not in the same AZ of the instance
B. The volume is not formatted
C. The volume is not attached as a root device
D. The volume is not mounted
Answer: D
Explanation:
When a user creates an EBS volume and attaches it as a device, it is required to mount the device. If the device/volume is not mounted it will not be available in the listing.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.htmI
Q22. In DynamoDB, the default table size is:
A. 5 GB
B. 1 GB
C. 10 GB
D. There is no table size
Answer: D
Explanation:
DynamoDB has seamless scalability with no table size limits and unlimited storage, so you shouIdn't be worried about managing storage on the host or to provisioning more drive, as your data requirement changes.
Reference: http://aws.amazon.com/dynamodb/
Q23. A user has launched a MySQL RDS. The user wants to plan for the DR and automate the snapshot. Which of the below mentioned functionality offers this option with RDS?
A. Copy snapshot
B. Automated synchronization
C. Snapshot
D. Automated backup
Answer: D
Explanation:
Amazon RDS provides two different methods for backing up and restoring the Amazon DB instances: automated backups and DB snapshots. Automated backups automatically back up the DB instance during a specific, user-definable backup window, and keep the backups for a limited, user-specified period of time.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoringAmazonR DSInstances.htmI
Q24. In regards to Amazon SQS how many times will you receive each message?
A. At least twice
B. Exactly once
C. As many times as you want
D. At least once
Answer: D
Explanation:
Amazon SQS is engineered to provide "at least once" delivery of all messages in its queues. Although most of the time, each message will be delivered to your application exactly once, you should design your system so that processing a message more than once does not create any errors or inconsistencies. Reference: https://aws.amazon.com/sqs/faqs/
Q25. Regarding Amazon SWF, the coordination logic in a workflow is contained in a software program called a
A. Handler
B. Decider
C. Cordinator
D. Worker
Answer: B
Explanation:
In Amazon SWF, the coordination logic in a workflow is contained in a software program called a decider. The decider schedules actMty tasks, provides input data to the actMty workers, processes events that arrive while the workflow is in progress, and ultimately ends (or closes) the workflow when the objective has been completed.
Reference: http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-intro-to-swf.html
Q26. A user has configured ELB with two instances running in separate AZs of the same region? Which of the below mentioned statements is true?
A. Nlulti AZ instances will provide HA with ELB
B. lVIuIti AZ instances are not possible with a single ELB
C. Nlulti AZ instances will provide scalability with ELB
D. The user can achieve both HA and scalability with ELB
Answer: A
Explanation:
If a user is running two instances in separate AZs, it will provide HA with ELB since ELB will automatically stop routing the traffic to unhealthy instances and send it to healthy instances only.
Q27. A user is part of a group which has a policy allowing him just read only access to EC2. The user is part of another group which has full access to EC2. What happens when the user tries to launch an instance?
A. It will allow the user to launch the instance
B. It will fail since the user has just read only access
C. It will allow or deny based on the group under which the user has logged into EC2
D. It will not allow the user to add to the conflicting groups
Answer: A
Explanation:
The IAM group policy is always aggregated. In this case, if the user does not have permission for one group, but has permission for another group, he will have full access to EC2. Unless there is specific deny policy, the user will be able to access EC2.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/PoIiciesOverview.htmI
Q28. When you create a table with a hash-and-range key, you must define one or more secondary indexes on that table.
A. False, hash-range key is another name for secondary index
B. False, it is optional
C. True
D. False, when you have Hash-Range key you cannot define Secondary index
Answer: B
Explanation:
When you create a table with a hash-and-range key in DynamoDB, you can also define one or more secondary indexes on that table.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LSI.htmI
Q29. A user has configured a bucket S3 to host a static website. What difference will there be when static website hosting is enabled?
A. It will help the user identify this bucket as the website root to map with the domain
B. It will create a new version of the bucket
C. It will not make any difference, but will help the user to configure the error page
D. It will provide the region specific website endpoint
Answer: D
Explanation:
To host a static website, the user needs to configure an Amazon S3 bucket for website hosting and then upload the website contents to the bucket. The website is then available at the region-specific website endpoint of the bucket.
Reference: http://docs.aws.amazon.com/AmazonS3/latest/dev/WebsiteHosting.htmI
Q30. An orgAMzation has 500 employees. The orgAMzation wants to set up AWS access for each department. Which of the below mentioned options is a possible solution?
A. Create IAM roles based on the permission and assign users to each role
B. Create IAM users and provide indMdual permission to each
C. Create IAM groups based on the permission and assign IAM users to the groups
D. It is not possible to manage more than 100 IAM users with AWS
Answer: C
Explanation:
An IAM group is a collection of IAM users. Groups let the user specify permissions for a collection of users, which can make it easier to manage the permissions for those users.
Reference: http://docs.aws.amazon.com/IAM/|atest/UserGuide/Using_WorkingWithGroupsAndUsers.htmI